Deco X20-4G doesn't work as IP route gateway for its subnet
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Hi everybody
I use a Deco X20-4G in router mode behing my internet modem.
My internet moden manage its own network in 192.168.1.0/24 IP
My Deco settings seem OK, but let's take a look
My Deco has a static IP 192.168.1.7 in the internet modem network and internet settings are OK :
- default gateway : 192.168.1.254 => the modem
- subnet mask : 255.255.255.0
The Deco manage its subnet in 192.168.68.0/24.
in LAN IP Section is :
- IP : 192.168.68.1
- subnet mask 255.255.255.0
The default settings for Deco DHCP section are selected.
All devices in the modem subnet and in the deco subnet work normally and can reach internet
All devices in each subnet can communicate with the other device in the same subnet
All devices in the Deco subnet can communicate with the modem subnet.
But a device (for example a RaspberryPI in 192.168.1.24) in the modem subnet can't reach a device in the deco subnet (for example a NAS in 192.168.68.113). Normal I didn't configure a route to the deco subnet with the deco as Gateway
So I added a route in my RPI in the modem network :
route add -net 192.168.68.0/24 gw 192.168.1.7
and the result :
pi@raspberrypi:~ $ route
Table de routage IP du noyau
Destination Passerelle Genmask Indic Metric Ref Use Iface
default 192.168.1.254 0.0.0.0 UG 202 0 0 eth0
192.168.1.0 0.0.0.0 255.255.255.0 U 202 0 0 eth0
192.168.68.0 192.168.1.7 255.255.255.0 UG 0 0 0 eth0
But I still can reach the NAS from the RPI
Neither with a ping :
pi@raspberrypi:~ $ ping 192.168.68.113
PING 192.168.68.113 (192.168.68.113) 56(84) bytes of data.
^C
--- 192.168.68.113 ping statistics ---
16 packets transmitted, 0 received, 100% packet loss, time 637ms
Nor with a traceroute :
pi@raspberrypi:~ $ traceroute 192.168.68.113
traceroute to 192.168.68.113 (192.168.68.113), 30 hops max, 60 byte packets
1 192.168.1.7 (192.168.1.7) 0.783 ms 0.584 ms 0.696 ms
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Deco is normaly used as gateway but it seems that the Deco does't manage IP gateway from the modem subnet to de Deco subnet.
While it manages it in the other way
Did I forget a setting ?
Could you help me ?
For information, i don't want to change the mode to choose the Access Point Mode.
Erlé
In networking terms, this is what you have:
Router #1 - Your Internet modem/router
Router #2 - Main Deco X20-4G
The question you ask is why device (such as RaspberryPI) connected to Router #1 can't reach (ping, etc) device such as computer or NAS which is connected to Router #2.
The answer should be clear from that diagram (hint: same reason you can't just ping your RaspberryPI from the Internet), but I can provide more detailed explanation if you'd like me to.
--------------------
Here is the list of common solutions to that, from easiest:
1. Configure Deco mesh to run in AP mode.
2. Connect everything to Deco mesh. Your Internet modem/router (Router #1 from the diagram) should only have Main Deco connected to it.
3. Place NAS to Router #2 DMZ - won't work, DMZ is not supported in Deco mesh.
4. Set port forwarding rules in Deco mesh.